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+---
+title: AudioContext.createConvolver()
+slug: Web/API/AudioContext/createConvolver
+translation_of: Web/API/BaseAudioContext/createConvolver
+---
+<p>{{ APIRef("Web Audio API") }}</p>
+
+<div>
+<p>{{ domxref("AudioContext") }}的方法<code>createConvolver()能创建一个</code>{{ domxref("ConvolverNode") }}，通常用来对你的音频应用混响效果。在 <a href="http://webaudio.github.io/web-audio-api/#background-3">Convolution规范定义</a> 中查看更多信息。</p>
+</div>
+
+<h2 id="语法">语法</h2>
+
+<pre class="brush: js">var audioCtx = new AudioContext();
+var convolver = audioCtx.createConvolver();</pre>
+
+<h3 id="Description" name="Description">返回值</h3>
+
+<p>{{domxref("ConvolverNode")}}对象。</p>
+
+<h2 id="Examples" name="Examples">例子</h2>
+
+<p>下面的例子展示了一个 AudioContext 创建一个 混响器节点 的基本使用方法。基本前提是你创建一个包含声音样本的 AudioBuffer 用作混响环境 (称之为<em>脉冲响应</em>,) 和在混响器中应用。 下面的例子使用了一个简短的示例音乐厅人群效果,所以混响效果应用深度和回声。</p>
+
+<p>更多完整例子请查看<a href="http://mdn.github.io/voice-change-o-matic/">Voice-change-O-matic demo</a> (中<a href="https://github.com/mdn/voice-change-o-matic/blob/gh-pages/scripts/app.js">app.js的</a>代码)。</p>
+
+<pre class="brush: js">var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+var convolver = audioCtx.createConvolver();
+
+  ...
+
+// grab audio track via XHR for convolver node
+
+var soundSource, concertHallBuffer;
+
+ajaxRequest = new XMLHttpRequest();
+ajaxRequest.open('GET', 'concert-crowd.ogg', true);
+ajaxRequest.responseType = 'arraybuffer';
+
+ajaxRequest.onload = function() {
+  var audioData = ajaxRequest.response;
+  audioCtx.decodeAudioData(audioData, function(buffer) {
+      concertHallBuffer = buffer;
+      soundSource = audioCtx.createBufferSource();
+      soundSource.buffer = concertHallBuffer;
+    }, function(e){"Error with decoding audio data" + e.err});
+}
+
+ajaxRequest.send();
+
+  ...
+
+convolver.buffer = concertHallBuffer;</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Web Audio API', '#widl-AudioContext-createConvolver-ConvolverNode', 'createConvolver()')}}</td>
+   <td>{{Spec2('Web Audio API')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容">浏览器兼容</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari (WebKit)</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatChrome(10.0)}}{{property_prefix("webkit")}}</td>
+   <td>{{CompatGeckoDesktop(25.0)}} </td>
+   <td>{{CompatNo}}</td>
+   <td>15.0{{property_prefix("webkit")}}<br>
+    22 (unprefixed)</td>
+   <td>6.0{{property_prefix("webkit")}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+   <th>Chrome for Android</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatUnknown}}</td>
+   <td>26.0</td>
+   <td>1.2</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>33.0</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web_Audio_API/Using_Web_Audio_API">Using the Web Audio API</a></li>
+</ul>